Intelligent bracelet for monitoring physical signs of pregnant woman

An intelligent bracelet for monitoring physical signs of a pregnant woman is characterized in that the intelligent bracelet comprises an ultrasonic transmitting unit and an ultrasonic receiving unit; the ultrasonic transmitting unit comprises an ultrasonic transmitter, and the ultrasonic transmitter is in controlled connection with an oscillation control module; the ultrasonic receiving unit comprises an ultrasonic receiver, the output end of the ultrasonic receiver is connected with an amplitude control module, the output end of the amplitude control module is connected with a multiplier, and the output end of the multiplier is connected with the input end of a low-pass filtering module; the output end of the low-pass filtering module is connected with the input end of a band-pass filtering module; and the output end of the band-pass filtering module is connected with a data processor. The heart rate of a fetus and a pregnant woman can be obtained by combining a Doppler fetal heart testing method, meanwhile,